Yeah, basically get his lust bar full. You can also check the entrance to Forest Park to see if he's there waiting for you.
Can you send me your save file to look at? Can use something like https://www.zippyshare.com/
So it took me a bit to figure out how to get my mobile file onto my desktop to use it, but I managed. I can also confirm that I was using a site "uploads.ungrounded.net" that automatically comes from your newgrounds link. On the mobile chrome site, it automatically brings it up into a separate link for some reason. I think the issue might be either cause I use an iPhone for the mobile version, or something relating to that newgrounds link thing. It seemed to work fine on the desktop. I'll just go ahead & that from now on instead. I would use the zippyshare thing, but I never downloaded anything, so I don't know how to get the file when it doesn't exist.